EP 2585714 B1 20160413 - RENEWABLE ENERGY EXTRACTION DEVICE SUCH AS WIND TURBINE WITH HYDRAULIC TRANSMISSION
Title (en)
RENEWABLE ENERGY EXTRACTION DEVICE SUCH AS WIND TURBINE WITH HYDRAULIC TRANSMISSION
Title (de)
GERÄT FÜR DIE AUSNUTZUNG VON ERNEUERBARER ENERGIE, WIE EINE WINDTURBINE, MIT HYDRAULISCHEM GETRIEBE
Title (fr)
DISPOSITIF POUR L'EXTRACTION D'ÉNERGIE RENOUVELABLE COMME UNE ÉOLIENNE AVEC UNE TRANSMISSION HYDRAULIQUE
Publication
Application
Priority
- GB 201020263 A 20101130
- JP 2011000920 W 20110218
Abstract (en)
[origin: GB2485987A] A renewable energy extraction device, such as a wind turbine generator includes a turbine 2 driving a hydraulic pump 10 which drives a variable displacement hydraulic motor 14 that drives an electrical generator having a rotor. The hydraulic motor 14 has electronically controlled valves, which may regulate flow between a high and low pressure manifolds, and are operated to select a net displacement of working chambers of the motor 14 on each cycle. In an event of an electric grid fault causing a maximum absorbable torque of the electrical generator to collapse, the electronically controlled valves are controlled to reduce a rate of displacement of working fluid by the hydraulic motor 14, thereby rapidly reducing the torque exerted on the generator rotor. Excess fluid displaced by the pump 10 is stored in an accumulator 28. When a maximum amount has been stored fluid is discharged through a throttle. If the fault persists, the turbine blades are feathered to reduce power input.
IPC 8 full level
F03D 9/00 (2016.01); F03D 80/00 (2016.01)
CPC (source: EP GB KR US)
F03D 9/17 (2016.05 - US); F03D 9/255 (2017.02 - EP US); F03D 9/28 (2016.05 - EP GB US); F03D 15/00 (2016.05 - EP GB US); F03D 15/20 (2016.05 - US); F03G 7/08 (2013.01 - KR); F16H 39/20 (2013.01 - GB); F16H 61/4192 (2013.01 - GB); F16H 61/472 (2013.01 - GB); F16H 61/478 (2013.01 - GB); H02N 11/00 (2013.01 - KR); H02P 9/006 (2013.01 - US); H02P 9/06 (2013.01 - US); F05B 2260/406 (2013.01 - EP US); Y02B 10/30 (2013.01 - KR); Y02E 10/72 (2013.01 - EP US); Y02E 60/16 (2013.01 - EP); Y02E 70/30 (2013.01 - EP); Y02P 80/10 (2015.11 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
GB 201020263 D0 20110112; GB 2485987 A 20120606; CN 103052796 A 20130417; EP 2585714 A1 20130501; EP 2585714 B1 20160413; JP 2013545939 A 20131226; JP 5774089 B2 20150902; KR 20130033431 A 20130403; US 2013257049 A1 20131003; WO 2012073390 A1 20120607
DOCDB simple family (application)
GB 201020263 A 20101130; CN 201180037603 A 20110218; EP 11712689 A 20110218; JP 2011000920 W 20110218; JP 2013505004 A 20110218; KR 20137002579 A 20110218; US 201113808029 A 20110218